Ballston, Arlington Weather
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Climate of Ballston: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Ballston, with average daytime highs around 31°C. January is the coolest, when nights typically fall to about -4°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 35°C, so the seasons feel very different from each other.
The area receives about 1150 mm of rain in a typical year. Most of it falls from May to October (around 58% of the yearly total), and June is the wettest month at roughly 118 mm.
There is no long, mild season here; September usually comes closest to comfortable outdoor weather, with highs near 27°C.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 4° | -4° | 67 mm | 82% |
| Feb | 6° | -3° | 70 mm | 80% |
| Mar | 11° | 1° | 84 mm | 79% |
| Apr | 18° | 7° | 92 mm | 76% |
| May | 23° | 13° | 109 mm | 78% |
| Jun | 28° | 18° | 118 mm | 74% |
| Jul | 31° | 21° | 116 mm | 69% |
| Aug | 30° | 20° | 109 mm | 70% |
| Sep | 27° | 16° | 107 mm | 72% |
| Oct | 20° | 9° | 105 mm | 76% |
| Nov | 13° | 3° | 80 mm | 79% |
| Dec | 7° | -1° | 95 mm | 83% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Ballston. Values describe typical conditions, not a forecast.
About Ballston weather
Ballston is a place in Virginia's humid subtropical-to-continental climate, from the coastal plain to the Appalachian highlands, located about 152 km north of Richmond. Ballston gets warm, humid summers (June–August) with highs in the low-to-mid 30s°C each year. Ballston closes out the year with cool winters (December–February), colder and snowier in the western mountains. This page shows live, auto-refreshing weather for Ballston: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/New_York.
Frequently asked questions
Ballston is about 152 km north of Richmond, in Virginia.
Ballston sees cool winters (December–February), colder and snowier in the western mountains.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Ballston's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Ballston, with average daytime highs of about 31°C and nights around 21°C.
The coldest nights come in January, when the average low is about -4°C and daytime highs reach around 4°C. Frost is possible on clear, calm nights.
Ballston receives about 1150 mm of rain in a typical year. June is the wettest month at roughly 118 mm, and the main rainy period is May to October.
There is no long mild season in Ballston. September usually comes closest to comfortable outdoor weather.
In November Ballston typically sees daytime highs near 13°C and lows near 3°C, with about 80 mm of rain over the month and average humidity around 79%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Ballston updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Ballston's day-to-day weather follows the broader pattern of Virginia described above. See the hourly weather forecast or the air quality index for more detail.